1 files changed, 68 insertions, 0 deletions
diff --git a/src/interface.rs b/src/interface.rs
new file mode 100644
index 0000000..568c450
--- /dev/null
+++ b/src/interface.rs
@@ -0,0 +1,68 @@
+use std::io;
+use std::io::{BufRead, BufReader, ErrorKind, Write};
+use std::os::unix::net::{UnixListener, UnixStream};
+use std::thread;
+
+use super::protocol::{ClientboundPacket, ServerboundPacket};
+use crossbeam_channel::Sender;
+use log::{debug, error, info, warn};
+
+pub fn network_loop(s: Sender<(u32, ServerboundPacket, Sender<ClientboundPacket>)>) {
+    let listener = UnixListener::bind("/run/user/1000/calendar").unwrap();
+    let mut id_counter = 0;
+
+    loop {
+        let (stream, addr) = listener.accept().unwrap();
+        let s = s.clone();
+        let id = id_counter;
+        id_counter += 1;
+        thread::spawn(move || {
+            info!("client connected: {:?}", addr);
+            if let Err(err) = handle_connection(id, stream.try_clone().unwrap(), s.clone()) {
+                warn!("client dropped: {:?} ({})", addr, err);
+            } else {
+                info!("client dropped: {:?}", addr);
+            }
+        });
+    }
+}
+
+fn handle_connection(
+    id: u32,
+    mut stream: UnixStream,
+    s: Sender<(u32, ServerboundPacket, Sender<ClientboundPacket>)>,
+) -> io::Result<()> {
+    let mut reader = BufReader::new(stream.try_clone()?);
+    let (responder, responses) = crossbeam_channel::unbounded();
+    thread::spawn(move || {
+        for m in responses {
+            debug!("{id} -> {m:?}");
+            match stream
+                .write_fmt(format_args!("{}\n", serde_json::to_string(&m).unwrap()))
+                .map_err(|e| e.kind())
+            {
+                Ok(_) => (),
+                Err(ErrorKind::BrokenPipe) => break,
+                Err(e) => error!("network error: {:?}", e),
+            }
+        }
+    });
+    let mut buf = String::new();
+    loop {
+        if reader.read_line(&mut buf)? == 0 {
+            break Ok(());
+        };
+        match serde_json::from_str::<ServerboundPacket>(buf.as_str()) {
+            Ok(packet) => {
+                debug!("{id} <- {packet:?}");
+                s.send((id, packet, responder.clone()))
+                    .map_err(|_| io::Error::from(ErrorKind::InvalidInput))?;
+            }
+            Err(err) => responder
+                .send(ClientboundPacket::Error(format!("{}", &err)))
+                .map_err(|_| io::Error::from(ErrorKind::InvalidInput))?,
+        }
+
+        buf.clear();
+    }
+}